ath79: fix UniFi AC LED mapping

The UniFi AC LED mapping is currently off. The blue/white LED are used
as WiFi indicators, while the vendor firmware does not feature WiFI
LEDs.

Instead, the LEDs are used to indicate the devices status. Align the LED
mapping to match the vendor firmware as good as possible.

Signed-off-by: David Bauer <mail@david-bauer.net>
(cherry picked from commit 18fa749df8bd9fe292c93f60ddd3fb963a78274a)

target/linux/ath79/dts/qca9563_ubnt_unifiac.dtsi

@@ -6,6 +6,13 @@
 #include "qca956x.dtsi"
 
 / {
+	aliases {
+		led-boot = &led_white;
+		led-failsafe = &led_white;
+		led-running = &led_blue;
+		led-upgrade = &led_blue;
+	};
+
 	chosen {
 		bootargs = "console=ttyS0,115200n8";
 	};
@@ -13,16 +20,14 @@
 	leds {
 		compatible = "gpio-leds";
 
-		wifi_ac {
+		led_white: led_white {
 			label = "ubnt:white:dome";
 			gpios = <&gpio 7 GPIO_ACTIVE_HIGH>;
-			linux,default-trigger = "phy0tpt";
 		};
 
-		wifi_n {
+		led_blue: led_blue {
 			label = "ubnt:blue:dome";
 			gpios = <&gpio 8 GPIO_ACTIVE_HIGH>;
-			linux,default-trigger = "phy1tpt";
 		};
 
 	};